TY  - RPRT
TI  - Mathematical coupling: a multilevel approach.
AU  - Mark S Gilthorpe
AU  - Yu-Kang Tu
PY  - 2004
DO  - 10.1093/ije/dyh302
UR  - https://pubmed.ncbi.nlm.nih.gov/15358741/
ID  - 15358741
ER  -